By John Foster (Lancaster University, UK)
By Mary Robinson
By Paul Waddington
By H. Griffiths, J.A.C. Smith
By Beverley Glover (Professor of Plant Systematics and Evolution, Professor of Plant Systematics and Evolution, Department of Plant Sciences, University of Cambridge)
By Vybarr Cregan-Reid
By Nick Rosen
By Chapman, Jenny, Reiss, Michael
By Natalie Fee
By Claire Potter
By Declan Kuch
By S. Mohan Jain, Pramod P.K. Gupta, R.J. Newton
By James T. Staley (University of Washington, Seattle), Anna-Louise Reysenbach (Portland State University, Portland, Oregon)
By C. Read
By I. Miyaoka
By Marcel Danesi
By B. Painter
By R. Shechter
By A. Nurse
By C. Boggs
By D. Elliott
By J. Winders
By B. Herzogenrath
By J.G.W. Jones, P.R. Street
By Dietrich Stauffer, H.Eugene Stanley
By Neil Morris
By Mark Kurlansky
By K. Bruckmeier
By M. Branagan